package com.ruoyi.common.utils;

import java.util.Random;

/**
 * 字典工具类
 *
 * @author ruoyi
 */
public class StringRandomUtils {
	//生成6位随机数
	public static String genRandomNum(){  
		int  maxNum = 36;
		int i;  
		int count = 0;
		char[] str = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',  
	        'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',  
	        'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };      
		StringBuffer pwd = new StringBuffer();
		Random r = new Random();
		while(count < 6){
			i = Math.abs(r.nextInt(maxNum));     
			if (i >= 0 && i < str.length) {  
				pwd.append(str[i]);  
				count ++;  
			}  
		}  
		return pwd.toString();  
	}

}
